[Pdns-users] Authoritative PDNS gives back non-authoritative Answers for records

[sthaug at nethelp.no]

>> I found some internet stuff where someone claims that the AA flag is
>> even not set  if the answer comes from a cache in some constellations
>> (bind cache). I dont see this behavior in my old bind environment.
> 
> The fact that a BIND recursor sets the AA bit in the reply is really
> nothing more than an accident, because if you repeat the same query to
> the same BIND recursor before the record has expired, you'll get it
> without the AA bit.
> 
> From the client's point of view then, it's effectively random whether
> the AA bit is set or not; it depends on whether some other client may
> or may not have recently issued the same query.

Newer versions of BIND don't show this behavior, as far as I can see.

Steinar Haug, AS2116